Updating to .Net 8.0.

.devcontainer/Dockerfile

@@ -0,0 +1,11 @@
+FROM mcr.microsoft.com/devcontainers/anaconda:1-3
+
+# Copy environment.yml (if found) to a temp location so we update the environment. Also
+# copy "noop.txt" so the COPY instruction does not fail if no environment.yml exists.
+COPY environment.yml* .devcontainer/noop.txt /tmp/conda-tmp/
+RUN if [ -f "/tmp/conda-tmp/environment.yml" ]; then umask 0002 && /opt/conda/bin/conda env update -n base -f /tmp/conda-tmp/environment.yml; fi \
+    && rm -rf /tmp/conda-tmp
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>

.devcontainer/devcontainer.json

@@ -0,0 +1,30 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/anaconda
+{
+	"name": "Anaconda (Python 3)",
+	"build": { 
+		"context": "..",
+		"dockerfile": "Dockerfile"
+	},
+
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"ms-dotnettools.vscode-dotnet-runtime",
+				"svelte.svelte-vscode",
+				"syler.sass-indented",
+				"dbaeumer.vscode-eslint",
+				"ms-dotnettools.csharp"
+			],
+			"settings": {
+				"python.defaultInterpreterPath": "/opt/conda/bin/python",
+				"dotnet.dotnetPath": "/opt/conda/lib/dotnet/",
+				"omnisharp.dotNetCliPaths": [
+					"/opt/conda/lib/dotnet/dotnet"
+				]
+			}
+		}
+	},
+
+	"postCreateCommand": "bash -i -c 'conda init'"
+}

.devcontainer/noop.txt

@@ -0,0 +1,3 @@
+This file copied into the container along with environment.yml* from the parent
+folder. This file is included to prevents the Dockerfile COPY instruction from 
+failing if no environment.yml is found.